Esteban, known as La Sombra, wants to avenge the death of his mother. There are several people who surround Esteban who have also lost their loved ones to a mysterious murderer, but these people will help La Sombra to look for clues to find the killers of the various victims. La Sombra has his own dragon-marked bullets which were used by hit men to frame the shadow for all the murders. But La Sombra does not give up until putting together the puzzle of the real murderer who will be someone very close to him.
—Luis Huizar